In July 2026, homes in Idaho paid an average of 13.73¢ per kWh, the 6th cheapest of the 50 states and DC and 25.0% below the U.S. average of 18.31¢.
That price is up 11.8% from a year earlier.
Over the past 12 months the average home in Idaho used 904 kWh a month, for an average bill of $114 (U.S.: $157).
About electricity in Idaho
Hydropower is Idaho's largest source of electricity, and the state uses more power than it generates, importing the rest from its neighbors. Most homes are served by investor-owned utilities.
- hydropower 47%
- natural gas 27%
- wind 15%
- solar 8%
- biomass 2%
- other 1%
The Idaho Public Utilities Commission is the state agency that regulates electric utilities in Idaho.
Average electric bill in Idaho
Over the last 12 months the average Idaho home paid $114 a month for electricity, the 4th lowest of the 50 states and DC. In July 2026 the average bill was $153 for 1,112 kWh.
Over the last 12 months, homes in Idaho used the most electricity in January, when electric heating drives usage up: an average of 1,183 kWh and a $143 bill. The lightest month was October, at 737 kWh and $92.
What would I pay?
| Monthly use | Per month | Per year |
|---|---|---|
| 500 kWh × 13.73¢ | $68.65 | $824 |
| 1,000 kWh × 13.73¢typical | $137.30 | $1,648 |
| 1,500 kWh × 13.73¢ | $205.95 | $2,471 |
| 2,000 kWh × 13.73¢ | $274.60 | $3,295 |
Estimate your own bill
Cost of electricity in Idaho by month
Businesses in Idaho paid 10.16¢ per kWh in July 2026 (the 5th cheapest for business power), and industrial users paid 9.02¢.
Electric companies in Idaho
13 utilities deliver electricity to homes in Idaho. The largest is Idaho Power Co, serving 540,032 homes.
| Utility | Homes served | Avg. home rate |
|---|---|---|
| Idaho Power Co | 540,032 | 11.78¢ |
| Avista Corp | 129,181 | 11.84¢ |
| PacifiCorp | 75,599 | 13.53¢ |
| Kootenai Electric Cooperative | 31,004 | 13.44¢ |
| City of Idaho Falls | 29,403 | 9.60¢ |
| Northern Lights, Inc | 18,172 | 12.17¢ |
| Fall River Rural Elec Coop Inc | 15,952 | 11.11¢ |
| United Electric Co-op, Inc | 5,169 | 8.50¢ |
| Salmon River Electric Coop Inc | 2,426 | 9.87¢ |
| Inland Power & Light Company | 2,175 | 9.45¢ |
"Avg. home rate" is what each utility's full-service residential customers paid on average in 2025 (revenue ÷ kWh sold). Delivery-only utilities have no full-service rate.
Can you choose your electricity supplier in Idaho?
No. Households in Idaho buy electricity from the utility that serves their address. Rates are set by the state utility commission (for investor-owned utilities) or by the utility's own board (for co-ops and city-owned utilities).
Idaho compared with neighboring states
| State | Price per kWh | Avg. monthly bill (12 mo.) |
|---|---|---|
| Nevada | 12.77¢ | $119 |
| Utah | 13.12¢ | $104 |
| Idaho | 13.73¢ | $114 |
| Wyoming | 14.36¢ | $114 |
| Washington | 14.71¢ | $132 |
| Montana | 14.99¢ | $115 |
| Oregon | 15.97¢ | $132 |
Idaho electricity FAQ
What is the average electric bill in Idaho?
The average home in Idaho paid $114 a month over the last 12 months, using 904 kWh. That is the 4th lowest of the 50 states and DC. In July 2026 alone, the average bill was $153.
How much does electricity cost per kWh in Idaho?
Homes paid an average of 13.73¢ per kWh in July 2026, 25.0% below the U.S. average of 18.31¢. Businesses paid 10.16¢ per kWh.
Which month has the highest electric bills in Idaho?
January, in the last 12 months of data: the average bill reached $143 (1,183 kWh), compared with $92 in October, the lowest month.
Can I choose my electricity provider in Idaho?
No. Households in Idaho buy electricity from the utility that serves their address, at rates set by regulators or the utility's board.
What are the largest electric companies in Idaho?
By number of residential customers in 2025: Idaho Power Co (540,032), Avista Corp (129,181), PacifiCorp (75,599).
Latest ID electric rates, bills and usage: U.S. Energy Information Administration retail sales data (forms EIA-861M and EIA-861), latest month July 2026. Utilities and suppliers: EIA-861 (2025). Bills and usage are revenue and sales divided by customers. Last updated 2026-10-20.